The main difference between the US and Russia in this regard is that the US federal government has very little say or control over what are state-run elections.

Solidly red states don't need election interference; they're going to vote red. Solidly blue states aren't going to tolerate interference. The handful or so of swing states will be watched incredibly closely by everyone else for even a hint of interference.

> and then a smarter Republican comes along and its a repeat again in 2032.

I mean, this is just how American politics works now, and has worked since extreme political polarization took root. That's what happens when you have FPTP voting and a two-party system, where members of each party show complete disdain (justified or not) of members of the other party.